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16,600
['eng']
['Van Holten, J W']
['Supersymmetry and the geometry of Taub-NUT']
['General Relativity and Cosmology']
['space-time', 'particle, relativistic', 'sigma model, nonlinear', 'Hamiltonian formalism', 'conservation law', 'operator, algebra', 'supersymmetry']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409139']
['The supersymmetric extension of Taub-NUT space admits 4 standard supersymmetries plus several additional non-standard ones. The geometrical origin of these symmetries is traced. The result has applications to fermion modes in gravitational instantons as well as in long-range monopole dynamics.']
['1994-09-26']
16,601
['eng']
['Emmrich, C', 'Kutz, N']
['Doubly discrete Lagrangian systems related to the Hirota and sine-Gordon equation']
['General Theoretical Physics']
['lattice field theory', 'Lagrangian formalism', 'sine-Gordon equation', 'Korteweg-de Vries equation', 'phase space', 'differential forms, symplectic']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409144']
['We extend the action for evolution equations of KdV and MKdV type which was derived in [Capel/Nijhoff] to the case of not periodic, but only equivariant phase space variables, introduced in [Faddeev/Volkov]. The difference of these variables may be interpreted as reduced phase space variables via a Marsden-Weinstein ...
['1994-09-26']
16,602
['eng']
['Donoghue, J F']
['The ideas of gravitational effective field theory']
['Particle Physics - Theory']
['talk', 'effective Lagrangian', 'relativity theory, general', 'quantization, correction', 'perturbation theory']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409143']
['I give a very brief introduction to the use of effective field theory techniques in quantum calculations of general relativity. The gravitational interaction is naturally organized as a quantum effective field theory and a certain class of quantum corrections can be calculated.']
['1994-09-26']
16,603
['eng']
['Haller, K', 'Lim-Lombridas, E']
['Maxwell-Chern-Simons theory in covariant and Coulomb gauges']
['Particle Physics - Theory']
['quantum electrodynamics', 'dimension, 3', 'Chern-Simons term', 'fermion, charged particle', 'dependence, gauge', 'quantization, constraint', 'Hamiltonian formalism', 'Gauss law', 'Coulomb gauge']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409133']
["We quantize Quantum Electrodynamics in 2+1 dimensions coupled to a Chern-Simons (CS) term and a charged spinor field, in covariant gauges and in the Coulomb gauge. The resulting Maxwell-Chern-Simons (MCS) theory describes charged fermions interacting with each other and with topologically massive propagating photons....
['1994-09-23']
16,604
['eng']
['Boorstein, J', 'Kutasov, D']
['Wilson loops, winding modes, and domain walls in finite temperature QCD']
['Particle Physics - Theory']
['gauge field theory, SU(N)', 'finite temperature', 'partition function', 'Wilson loop', 'domain wall', 'fermion', 'propagator', 'critical phenomena', 'confinement']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409128']
['We discuss the effective action for Polyakov-Wilson loops winding around compact Euclidean time, which serve as order parameters for the finite temperature deconfinement transition in SU(N) Yang-Mills gauge theory. We then apply our results to the study of the high temperature continuation of the confining phase, and...
['1994-09-23']
16,605
['eng']
['Schirrmacher, A']
['Generalized q-exponentials related to orthogonal quantum groups and Fourier transformations of noncommutative spaces']
['Particle Physics - Theory']
['quantum group, representation', 'R-matrix', 'quantum space', 'differential geometry, noncommutative']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409132', 'http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=.&id=SCAN-9410260']
['An essential prerequisite for the study of q-deformed physics are particle states in position and momentum representation. in order to relate x- and p-space by Fourier transformations the appropriate q-exponential series related to orthogonal quantum symmetries is constructed. It turns out to be a new q-special funct...
['1994-09-22']
16,606
['eng']
['Funahashi, K', 'Kashiwa, T', 'Sakoda, S', 'Fujii, K']
['Coherent states, path integral, and semiclassical approximation']
['General Theoretical Physics', 'Particle Physics - Theory']
['quantum mechanics', 'path integral', 'symmetry, SU(2)', 'symmetry, SU(1,1)', 'approximation, quasiclassical', 'coherent state', 'quantum mechanics', 'path integral', 'symmetry, SU(2)', 'symmetry, SU(1,1)', 'approximation, quasiclassical', 'coherent state']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=.&id=SCAN-9410265', 'http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409116']
["Using the generalized coherent states we argue that the path integral formulae for SU(2) and SU(1,1) (in the discrete series) are WKB exact, if the starting point is expressed as the trace of e^{-iT\\hat H} with \\hat H being given by a linear combination of generators. In our case,WKB approximation is achieved by ta...
['1996-06-03']
16,607
['eng']
['Sakamoto, M', 'Tachibana, M']
['Topological terms in string theory on orbifolds']
['Particle Physics - Theory']
['string model', 'field theory, orbifold', 'field theory, torus', 'field theory, action', 'path integral', 'charge, topological', 'operator, algebra']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409123']
['We study toroidal orbifold models with topologically invariant terms in the path integral formalism and give physical interpretations of the terms from an operator formalism point of view. We briefly discuss a possibility of a new class of modular invariant orbifold models.']
['1994-09-22']
16,608
['eng']
['Barnich, G', 'Brandt, F', 'Henneaux, M']
['General solution of the Wess-Zumino consistency condition for Einstein gravity']
['Particle Physics - Theory']
['relativity theory, general', 'Hamiltonian formalism', 'differential forms', 'transformation, Becchi-Rouet-Stora', 'anomaly']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409104']
['The Wess-Zumino consistency condition for four-dimensional Einstein gravity is investigated in the space of local forms involving the fields, the ghosts, the antifields and their derivatives. Its general solution is constructed for all values of the form degree and of the ghost number. It is shown in particular that ...
['1994-09-20']
16,609
['eng']
['Giacconi, P', 'Maltoni, F', 'Soldati, R']
['Anomaly and thermodynamics for 2D spinors in the Aharonov-Bohm gauge field']
['Particle Physics - Theory']
['talk', 'fermion, Dirac', 'field theory, Euclidean', 'dimension, 2', 'Aharonov-Bohm effect', 'anomaly, axial', 'thermodynamics']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409103']
['The axial anomaly is computed for Euclidean Dirac fermions on the plane. The dependence upon the self-adjoint extensions of the Dirac operator is investigated and its relevance concerning the second virial coefficient of the anyon gas is discussed.']
['1994-09-20']
16,610
['eng']
['Villalba, V M']
['Bound states of the hydrogen atom in the presence of a magnetic monopole field and an Aharonov-Bohm potential']
['Particle Physics - Theory']
['quantum mechanics', 'potential, Coulomb', 'postulated particle, magnetic monopole', 'bound state', 'hydrogen, atom', 'atom, energy levels', 'Aharonov-Bohm effect', 'Klein-Gordon equation, solution']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409102']
['In the present article we analyze the bound states of an electron in a Coulomb field when an Aharonov-Bohm field as well as a magnetic Dirac monopole are present. We solve, via separation of variables, the Schr\\"odinger equation in spherical coordinates and we show how the Hydrogen energy spectrum depends on the Aha...
['1994-09-21']
16,611
['eng']
['Dienes, K R']
['How strings make do without supersymmetry']
['Particle Physics - Theory']
['talk', 'string model', 'partition function', 'phase space', 'invariance, modular', 'supersymmetry, symmetry breaking', 'field theory, finite', 'numerical calculations']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409114']
['We provide a non-technical introduction to "misaligned supersymmetry", a generic phenomenon in string theory which describes how the arrangement of bosonic and fermionic states at all string energy levels conspires to preserve finite string amplitudes even in the absence of spacetime supersymmetry. Misaligned supersy...
['1994-09-20']
16,612
['eng']
['Cvetic, M', 'Youm, D']
['Supersymmetric dyonic black holes in Kaluza-Klein theory']
['Particle Physics - Theory']
['Kaluza-Klein model, abelian', 'supersymmetry', 'dimension, >4', 'symmetry, rotational', 'field equations, solution', 'field theory, dyon', 'black hole']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409119']
["We study supersymmetric, four-dimensional (4-d), Abelian charged black holes (BH's) arising in (4+n)-d (1 \\le n \\le 7) Kaluza-Klein (KK) theories. Such solutions, which satisfy supersymmetric Killing spinor equations (formally satisfied for any n) and saturate the corresponding Bogomol'nyi bounds, can be obtained i...
['1996-06-03']
16,613
['eng']
['Cvetic, M', 'Youm, D']
['Addendum to "Supersymmetric dyonic black holes in Kaluza-Klein theory"']
['Particle Physics - Theory']
['Kaluza-Klein model, abelian', 'supersymmetry', 'dimension, >4', 'symmetry, rotational', 'field equations, solution', 'field theory, dyon', 'black hole']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9503081']
["We complete the study of 4-dimensional (4-d), static, spherically symmetric, supersymmetric black holes (BH's) in Abelian (4+n)-d Kaluza-Klein theory, by showing that for such solutions n electric charges \\vec{\\cal Q} \\equiv (Q_1,...,Q_n) and n magnetic charges \\vec{\\cal P} \\equiv (P_1,...,P_n) are subject to t...
['1995-03-13']
16,614
['eng']
['Benson, K M', 'Saadi, M']
['Confining flux tubes in a current algebra approach']
['Particle Physics - Theory']
['gauge field theory, SO(N)', 'fermion, flavor', 'symmetry, SU(N)', 'flux tube', 'confinement', 'current algebra', 'energy', 'quantization', 'zero mode', 'stability', 'approximation, quasiclassical', 'numerical calculations']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409109']
["We describe flux tubes and their interactions in a low energy sigma model induced by SU(\\NF) \\goto SO(\\NF) flavor symmetry breaking in SO(N_c) QCD. Unlike standard QCD, this model allows gauge confinement to manifest itself in the low energy theory, which has unscreened spinor color sources and global Z_2 flux tub...
['1994-09-20']
16,615
['eng']
['Kehagias, A A', 'Meessen, P A A', 'Zoupanos, George']
['Deformed Poincaré algebra and field theory']
['Particle Physics - Theory']
['algebra, Poincare', 'algebra, deformation', 'field theory, scalar']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409106']
['We examine deformed Poincaré algebras containing the exact Lorentz algebra. We impose constraints which are necessary for defining field theories on these algebras and we present simple field theoretical examples. Of particular interest is a case that exhibits improved renormalization properties.']
['1994-09-20']
16,616
['eng']
['Cangemi, D', 'Dunne, G', "D'Hoker, E"]
['Derivative expansion of the effective action and vacuum instability for QED in 2+1 dimensions']
['Particle Physics - Theory']
['quantum electrodynamics', 'dimension, 3', 'effective action', 'fermion']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409113']
['We investigate the effective action of 2+1 dimensional charged spin 1/2 fermions and spin 0 bosons in the presence of a U(1) gauge field. We evaluate terms in an expansion up to second order in derivatives of the field strength, but exactly in the mass parameter and in the magnitude of the nonvanishing constant field...
['1994-09-20']
16,617
['eng']
['Pimentel, B M', 'Tomazelli, J L']
['Path-ordered phase factors in scalar quantum electrodynamics']
['Particle Physics - Theory']
['quantum electrodynamics', 'field theory, scalar', 'Dirac equation', 'propagator', 'vertex function']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409115']
["Starting from linear equations for the complex scalar field, the two- and three-point Green's functions are obtained in the infrared approximation. We show that the infrared singularity factorizes in the vertex function as in spinorial QED, reproducing in a straightforward way the result of lenghty perturbative calcu...
['1994-09-20']
16,618
['eng']
['Abdesselam, A', 'Rivasseau, V']
['Trees, forests and jungles']
['General Theoretical Physics']
['expansion, cluster', 'field theory, constructive', 'mathematical methods']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409094']
['Combinatoric formulas for cluster expansions have been improved many times over the years. Here we develop some new combinatoric proofs and extensions of the tree formulas of Brydges and Kennedy, and test them on a series of pedagogical examples.']
['1994-09-19']
16,619
['eng']
['Kapustin, A A', 'Skorik, S']
['On the non-relativistic limit of the quantum sine-Gordon model with integrable boundary condition']
['Particle Physics - Theory']
['sine-Gordon model', 'dimension, 2', 'approximation, nonrelativistic', 'boundary condition', 'integrability', 'quantization', 'S-matrix']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409097']
['We show that the the generalized Calogero-Moser model with boundary potential of the P\\"oschl-Teller type describes the non-relativistic limit of the quantum sine-Gordon model on a half-line with Dirichlet boundary condition.']
['1994-09-19']
16,620
['eng']
['Douglas, M R']
['Large N gauge theory']
['Particle Physics - Theory']
['gauge field theory, SU(N)', 'dimension, 2', 'lattice field theory', 'path integral', 'quantum group', 'bibliography', 'expansion 1/N']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409098']
['We use solvable two-dimensional gauge theories to illustrate the issues in relating large N gauge theory to string theory. We also give an introduction to recent mathematical work which allows constructing master fields for higher dimensional large N theories. We illustrate this with a new derivation of the Hopf equa...
['1994-09-19']
16,621
['eng']
['Lópes-Cardoso, G', 'Lüst, Dieter', 'Mohaupt, T']
['Duality symmetries and supersymmetry breaking in string compactifications']
['Particle Physics - Theory']
['talk', 'supergravity', 'string model', 'supersymmetry, spontaneously broken', 'duality', 'effective action', 'spontaneous compactification, orbifold']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409095']
['We discuss the spontaneous supersymetry breaking within the low-energy effective supergravity action of four-dimensional superstrings. In particular, we emphasize the non-universality of the soft supersymmetry breaking parameters, the \\mu-problem and the duality symmetries.']
['1994-09-19']
16,622
['eng']
['Ikehara, M', 'Ishibashi, N', 'Kawai, H', 'Mogami, T', 'Nakayama, R', 'Sasakura, N']
['A note on string field theory in the temporal gauge']
['Particle Physics - Theory']
['talk, Kyoto 1994/02/14', 'field theory, string', 'temporal gauge', 'central charge', 'matrix model', 'Dyson-Schwinger equation', 'Hamiltonian formalism', 'quantization, stochastic']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409101']
['In this note, we review the recent developments in the string field theory in the temporal gauge. (Based on a talk presented by N.I. in the workshop {\\it Quantum Field Theory, Integrable Models and Beyond}, Yukawa Institute for Theoretical Physics, Kyoto University, 14-18 February 1994.)']
['1994-09-19']
16,623
['eng']
['Naón, C M', 'Von Reichenbach, M C', 'Trobo, M L']
['Path-integral bosonization of a non-local interaction and its application to the study of 1-d many-body systems']
['Particle Physics - Theory']
['field theory, nonlocal', 'fermion', 'dimension, 2', 'bosonization', 'path integral', 'correlation function', 'nonabelian', 'many-body problem']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409085']
['We extend the path-integral approach to bosonization to the case in which the fermionic interaction is non-local. In particular we obtain a completely bosonized version of a Thirring-like model with currents coupled by general (symmetric) bilocal potentials. The model contains the Tomonaga-Luttinger model as a specia...
['1994-09-19']
16,624
['eng']
['Susskind, Leonard']
['The world as a hologram']
['Particle Physics - Theory']
['quantum gravity', 'string model', 'black hole, horizon', 'model, parton', 'quantization, light front', 'particle, momentum', 'lattice field theory', 'dimension, 4', 'dimension, 3', 'wave function', 'fixed point']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409089']
["According to 't Hooft the combination of quantum mechanics and gravity requires the three dimensional world to be an image of data that can be stored on a two dimensional projection much like a holographic image. The two dimensional description only requires one discrete degree of freedom per Planck area and yet it i...
['1994-09-16']
16,625
['eng']
['Takhtajan, L A']
['Topics in quantum geometry of Riemann surfaces']
['Particle Physics - Theory']
['lectures, Varenna 1994/06/28', 'quantum gravity', 'dimension, 2', 'Riemann surfaces', 'geometry, modular', 'correlation function', 'field theory, conformal', 'operator product expansion', 'Ward identity', 'moduli space', 'algebra, Virasoro', 'central charge', 'field theory, Liouville']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409088']
["Lectures given at International School of Physics ``Enrico Fermi'', Varenna, Villa Monastero, June 28-July 7 1994."]
['1994-09-16']
16,626
['eng']
['Ezawa, K']
['Chern-Simons quantization of (2+1)-anti-de Sitter gravity on a torus']
['Particle Physics - Theory']
['quantum gravity', 'dimension, 3', 'astrophysics, fundamental constant', 'gauge field theory', 'Chern-Simons term', 'space-time, anti-de Sitter', 'quantization', 'phase space', 'transformation, modular', 'space-time, torus']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409074']
['Chern-Simons formulation of 2+1 dimensional Einstein gravity with a negative cosmological constant is investigated when the spacetime has the topology {\\bf R}\\times T^{2}. The physical phase space is shown to be a direct product of two sub-phase spaces each of which is a non-Hausdorff manifold plus a set with nonze...
['1994-09-15']
16,627
['eng']
['Delfino, G', 'Mussardo, G', 'Simonetti, P']
['Scattering theory and correlation functions in statistical models with a line of defect']
['General Theoretical Physics']
['statistical mechanics', 'scattering', 'integrability', 'Yang-Baxter equation', 'algebra, defect', 'correlation function', 'Ising model', 'fermion', 'bibliography']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409076']
['The scattering theory of the integrable statistical models can be generalized to the case of systems with extended lines of defect. This is done by adding the reflection and transmission amplitudes for the interactions with the line of inhomegeneity to the scattering amplitudes in the bulk. The factorization conditio...
['1994-09-15']
16,628
['eng']
['Petersen, J U H']
['Representations at a root of unity of q-oscillators and quantum Kac-Moody algebras']
['Particle Physics - Theory']
['Thesis']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409079']
['Summary of Contents: Chapter 1. Introduction Chapter 2. Notation and preliminaries Part I. Finite quantum groups Chapter 3. 2x2 Matrix quantum groups and the quantum plane Chapter 4. Quantum enveloping algebras at a root of unity Part II. q-Oscillators Chapter 5. Representations of q-oscillators at a root of unity Ch...
['1994-09-15']
16,629
['eng']
['Moritsch, O', 'Schweda, Manfred', 'Sommer, T', 'Tataru, L', 'Zerrouki, H']
['BRST cohomology of Yang-Mills gauge fields in the presence of gravity in Ashtekar variables']
['Particle Physics - Theory']
['gauge field theory, Yang-Mills', 'gravitation', 'Hamiltonian formalism', 'loop space', 'cohomology, Becchi-Rouet-Stora', 'anomaly', 'Chern-Simons term']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409081']
['The BRST transformations for the Yang-Mills gauge fields in the presence of gravity described by Ashtekar variables are obtained by using the so-called Maurer-Cartan horizontality conditions. The BRST cohomology group expressed by the Wess-Zumino consistency condition is solved with the help of an operator \\delta in...
['1994-09-15']
16,630
['eng']
['Klebanov, Igor R', 'Hashimoto, A']
['Non-perturbative solution of matrix models modified by trace-squared terms']
['Particle Physics - Theory']
['matrix model, action', 'nonperturbative', 'partition function', 'random surface', 'scaling', 'wormhole', 'universality', 'expansion 1/N']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409064']
["We present a non-perturbative solution of large N matrix models modified by terms of the form g(\\Tr\\Phi^4)^2, which add microscopic wormholes to the random surface geometry. For g<g_t the sum over surfaces is in the same universality class as the g=0 theory, and the string susceptibility exponent is reproduced by t...
['1994-09-13']
16,631
['eng']
['Feng, Y J', 'Lam, C S']
['String organization of field theories']
['Particle Physics - Theory']
['string model', 'supersymmetry', 'invariance, conformal', 'duality', 'invariance, gauge', 'perturbation theory, higher-order', 'quantum electrodynamics']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409083']
['String theories should reduce to ordinary four-dimensional field theories at low energies. Yet the formulation of the two are so different that such a connection, if it exists, is not immediately obvious. With the Schwinger proper-time representation, and the spinor helicity technique, it has been shown that field th...
['1994-09-15']
16,632
['eng']
['Kristjansen, C F']
['Multi-loop correlators for rational theories of 2D gravity from the generalized Kontsevich models']
['Particle Physics - Theory']
['quantum gravity', 'dimension, 2', 'partition function', 'correlation function', 'Kadomtsev-Petviashvili equation, hierarchy', 'differential equations, solution', 'perturbation theory, higher-order', 'matrix model, Kontsevich model']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409066']
['We introduce a parametrization of the coupling constant space of the generalized Kontsevich models in terms of a set of moments equivalent to those introduced recently in the context of topological gravity. For the simplest generalization of the Kontsevich model we express the moments as elementary functions of the s...
['1994-09-13']
16,633
['eng']
['Kubo, J', 'Mondragón, M N', 'Tracas, N D', 'Zoupanos, George']
['Gauge-Yukawa unification in asymptotically non-free theories']
['Particle Physics - Theory']
['unified field theory', 'gauge field theory, SU(4) x SU(2) x SU(2)', 'renormalization group', 'coupling, gauge', 'gauge, coupling', 'coupling, Yukawa', 'Yukawa, coupling', 'supersymmetry', 'sparticle, mass', 'mass, sparticle', 'numerical calculations']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409003']
['We study asymptotically non-free gauge theories and search for renormalization group invariant (i.e. technically natural) relations among the couplings which lead to successful gauge-Yukawa unification. To be definite, we consider a supersymmetric model based on SU(4)\\times SU(2)_{R}\\times SU(2)_{L}. It is found th...
['1994-09-02']
16,634
['eng']
['Tada, T', 'Uehara, S']
['Consequence of Hawking radiation from 2d dilaton black holes']
['General Relativity and Cosmology']
['relativity theory, general', 'field theory, dilaton', 'dimension, 2', 'field equations, solution', 'black hole, mass', 'mass, black hole', 'radiation, Hawking', 'numerical calculations']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409039']
["We investigate the CGHS model through numerical calculation. The behavior of the mass function, which we introduced in our previous work as ``local mass'', is examined. We found the mass function takes negative values, which means the amount of Hawking radiation become greater than the initial mass of the black hole ...
['1994-09-12']
16,635
['eng']
['Kallosh, R', 'Ortín, Tomas']
['Exact SU(2) x U(1) stringy black holes']
['Particle Physics - Theory']
['black hole, dilaton', 'string model, heterotic', 'supersymmetry', 'gauge field theory, SU(2) x U(1)', 'dimensional reduction', 'dimension, 10', 'dimension, 4']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409060']
["Extreme magnetic dilaton black holes are promoted to exact solutions of heterotic string theory with unbroken supersymmetry. With account taken of alpha' corrections this is accomplished by supplementing the known solutions with SU(2) Yang-Mills vectors and scalars in addition to the already existing Abelian U(1) vec...
['1994-09-12']
16,636
['eng']
['Gat, G', 'Raval, A', 'Ray, R']
['The inhomogeneity expansion for planar QED in a magnetic background']
['Particle Physics - Theory']
['quantum electrodynamics, planar', 'quantum electrodynamics, nonrelativistic', 'magnetic field, external field', 'effective action', 'four-fermion interaction', 'quantum electrodynamics, relativistic', 'dimension, 3', 'Chern-Simons term']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409059']
['The effective action for Q.E.D in external magnetic field is constructed using the method of inhomogeneity expansion. We first treat the non-relativistic case where a Chern-Simons like term is generated. We then consider the full relativistic theory and derive the effective action for the A_{\\mu} fields. In the non-...
['1994-09-12']
16,637
['eng']
['Blaga, P A', 'Moritsch, O', 'Schweda, Manfred', 'Sommer, T', 'Tataru, L', 'Zerrouki, H']
['Algebraic structure of gravity in Ashtekar variables']
['Particle Physics - Theory']
['gauge field theory, Yang-Mills', 'quantum gravity', 'Hamiltonian formalism', 'loop space', 'operator, algebra', 'transformation, Becchi-Rouet-Stora', 'cohomology', 'anomaly']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409046']
['The BRST transformations for gravity in Ashtekar variables are obtained by using the Maurer-Cartan horizontality conditions. The BRST cohomology in Ashtekar variables is calculated with the help of an operator \\delta introduced by S.P. Sorella, which allows to decompose the exterior derivative as a BRST commutator. ...
['1994-09-12']
16,638
['eng']
['Hyun, S', 'Song, Y', 'Yee, J H']
['Hawking radiation of Dirac fields in the (2+1)-dimensional black hole space-time']
['General Relativity and Cosmology']
['gravitation', 'dimension, 3', 'black hole', 'fermion, propagator', 'radiation, Hawking', 'temperature']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409047']
["By calculating the response function, we study the Hawking radiation of massless Dirac fields in the (2+1)-dimensional black hole geometry. We find that the response function has Planck distributions, with the temperature that agrees with the previous results obtained for the scalar field cases. We also find the Gree...
['1994-09-12']
16,639
['eng']
['Aneziris, C N']
['Towards a classification of knots']
['Particle Physics - Theory']
['talk', 'knot theory', 'topology', 'geometry, algebra']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409055']
['We discuss the possibility of the existence of finite algorithms that may give distinct knot classes. In particular we present two attempts for such algorithms which seem promising, one based on knot projections on a plane, the other on placing knots on a cubic lattice.']
['1994-09-12']
16,640
['eng']
['Ohta, K', 'Suzuki, H']
['Chiral fermions on quantum four-spheres']
['Particle Physics - Theory']
['operator, Dirac', 'space-time, sphere', 'quantum space', 'fermion, chiral', 'wave function', 'spin, 1/2', '1/2, spin']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409045']
['We construct wave functions and Dirac operator of spin 1/2 fermions on quantum four-spheres. The construction can be achieved by the q-deformed differential calculus which is manifestly SO(5)_q covariant. We evaluate the engenvalue of the Dirac operator on wave functions of the spinors and show that we can define the...
['1994-09-12']
16,641
['eng']
['Grady, M']
['Spontaneous symmetry breaking as the mechanism of quantum measurement']
['Particle Physics - Theory']
['quantum mechanics, measurement', 'symmetry, spontaneously broken', 'field theory, scalar']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409049']
['It is proposed that an event that constitutes a quantum measurement corresponds to the spontaneous breaking of a symmetry in the measuring device over time.']
['1994-09-12']
16,642
['eng']
['Bianchi, M', 'Fucito, F', 'Martellini, M', 'Rossi, G C']
['Ale instantons in string effective theory']
['Particle Physics - Theory']
['string model, heterotic', 'effective action', 'background field', 'field theory, instanton', 'bibliography']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409037']
["We show that the classical equations of motion of the low-energy effective field theory describing the massless modes of the heterotic (or type I) string admit two classes of supersymmetric self--dual backgrounds. The first class, which was already considered in the literature, consists of solutions with a (conformal...
['1994-09-08']
16,643
['eng']
['Hagen, C R']
['Unification of the soluble two-dimensional vector coupling models']
['General Theoretical Physics']
['fermion, massless', 'massless, fermion', 'field theory, vector', 'dimension, 2', 'current', 'propagator', 'field equations, solution', 'Schwinger model']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409038']
["-- The general theory of a massless fermion coupled to a massive vector meson in two dimensions is formulated and solved to obtain the complete set of Green's functions. Both vector and axial vector couplings are included. In addition to the boson mass and the two coupling constants, a coefficient which denotes a par...
['1994-09-08']
16,644
['eng']
['Benson, K M', 'Manohar, A V', 'Saadi, M']
['QCD flux tubes as sigma model relics']
['Particle Physics - Theory']
['gauge field theory, SO(N)', 'gauge field theory, confinement', 'symmetry breaking, flavor', 'sigma model', 'low-energy theorem', 'flux tube, stability', 'stability, flux tube', 'energy, density', 'Skyrmion', 'numerical calculations']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409042']
['We describe flux tubes and their interactions in a low energy sigma model induced by SU(\\NF) \\goto SO(\\NF) flavor symmetry breaking in SO(N_c) QCD. Gauge confinement manifests itself in the low energy theory through flux tube interactions with unscreened sources. The flux tubes which mediate confinement also illus...
['1994-09-11']
16,645
['eng']
['Moore, G']
['2D Yang-Mills theory and topological field theory']
['Particle Physics - Theory']
['talk, Zuerich 1994/08/03', 'gauge field theory, Yang-Mills', 'field theory, topological', 'dimension, 2', 'field theory, Euclidean', 'fibre bundle', 'partition function', 'moduli space', 'cohomology', 'geometry, algebra', 'bibliography']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409044']
['Contribution to the Proceedings of the International Congress of Mathematicians 1994. We review recent developments in the physics and mathematics of Yang-Mills theory in two dimensional spacetimes. This is a condensed version of a forthcoming review by S. Cordes, G. Moore, and S. Ramgoolam.']
['1994-09-11']
16,646
['eng']
['Belopolsky, A', 'Zwiebach, B']
['Off-shell closed string amplitudes']
['Particle Physics - Theory']
['string model, closed', 'field theory, tachyon', 'scattering amplitude, higher-order', 'higher-order, scattering amplitude', 'Riemann surfaces']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409015']
['We derive an explicit formula for the evaluation of the classical closed string action for any off-shell string field, and for the calculation of arbitrary off-shell amplitudes. The formulae require a parametrization, in terms of some moduli space coordinates, of the family of local coordinates needed to insert the o...
['1994-09-05']
16,647
['eng']
['Fernández-Pousa, C R', 'Gallas-Torreira, M V', 'Miramontes, J L', 'Guillen, S']
['W-algebras from Heisenberg subalgebras']
['Particle Physics - Theory']
['algebra, W(N)', 'Korteweg-de Vries equation, hierarchy', 'algebra, Kac-Moody', 'algebra, Heisenberg', 'Hamiltonian formalism', 'field equations, soliton', 'tensor, energy-momentum', 'algebra, Lie']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409016']
["We derive sufficient conditions under which the ``second'' Hamiltonian structure of a class of generalized KdV-hierarchies defines one of the classical \\cal W-algebras obtained through Drinfel'd-Sokolov Hamiltonian reduction. These integrable hierarchies are associated to the Heisenberg subalgebras of an untwisted a...
['1994-09-05']
16,648
['eng']
['Savvidy, G K', 'Savvidy, G K']
['Interaction hierarchy']
['Particle Physics - Theory']
['lattice field theory', 'random surface', 'statistical mechanics', 'duality', 'interaction, hierarchy', 'hierarchy, interaction']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409030']
['We analyse a new class of statistical systems, which simulate different systems of random surfaces on a lattice. Geometrical hierarchy of the energy functionals on which these theories are based produces corresponding hierarchy of the surface dynamics and of the phase transitions. We specially consider 3D gonihedric ...
['1994-09-06']
16,649
['eng']
['Savvidy, G K', 'Savvidy, G K']
['Dual statistical systems and geometrical string']
['Particle Physics - Theory']
['Ising model', 'partition function', 'Hamiltonian formalism', 'temperature, high', 'energy', 'duality']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409031']
['We analyse statistical system with interface energy proportional to the length of the edges of interface. We have found the dual system high temperature expansion of which equally well generates surfaces with linear amplitude. These dual systems are in the same relation as 3D Ising ferromagnet to the 3D Gauge spin sy...
['1994-09-06']
16,650
['eng']
['Higuchi, S', 'Itoi, C', 'Nishigaki, S M', 'Sakai, N']
['Renormalization group flow in one- and two-matrix models']
['Particle Physics - Theory']
['matrix model, 1', 'matrix model, 2', 'renormalization group, transformation', 'invariance, reparametrization', 'critical phenomena', 'expansion 1/N']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409009']
['Large-N renormalization group equations for one- and two-matrix models are derived. The exact renormalization group equation involving infinitely many induced interactions can be rewritten in a form that has a finite number of coupling constants by taking account of reparametrization identities. Despite the nonlinear...
['1994-09-05']
16,651
['eng']
['Sitarz, A']
['Noncommutative differential calculus on the $\\kappa$-Minkowski space']
['Mathematical Physics and Mathematics']
['differential geometry, noncommutative', 'quantum algebra, Lorentz', 'space, Minkowski', 'deformation', 'dimension, 2']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409014']
['Following the construction of the \\kappa-Minkowski space from the bicrossproduct structure of the \\kappa-Poincare group, we investigate possible differential calculi on this noncommutative space. We discuss then the action of the Lorentz quantum algebra and prove that there are no 4D bicovariant differential calcul...
['1994-09-05']
16,652
['eng']
['Dvoeglazov, V V']
['The Weinberg propagators']
['Particle Physics - Theory']
['talk, Zacatecas 1994/08/08', 'fermion, propagator', 'quantization, 2', 'Hamiltonian formalism', 'vector meson, propagator']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408176']
['An analog of the S=1/2 Feynman-Dyson propagator is presented in the framework of the S=1 Weinberg theory. The ground for this construction is the concept of the Weinberg field as a system of four field functions differing on the parity and by the dual transformations.']
['1994-09-01']
16,653
['eng']
['Freedman, Daniel Z']
['Some beautiful equations of mathematical physics']
['Particle Physics - Theory']
['lectures, Trieste 1993/08/08', 'field equations', 'spinless', 'spin, 1', 'spin, 2', 'Salam-Weinberg model', 'supersymmetry', 'supergravity', 'spin, 1/2', 'spin, 3/2']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408175']
['The basic ideas and the important role of gauge principles in modern elementary particle physics are outlined. There are three theoretically consistent gauge principles in quantum field theory: the spin-1 gauge principle of electromagnetism and the standard model, the spin-2 gauge principle of general relativity, and...
['1994-09-01']
16,654
['eng']
['Polonyi, J']
['Renormalization group in quantum mechanics']
['Particle Physics - Theory']
['quantum mechanics', 'renormalization group', 'model, oscillator', 'space-time', 'scaling', 'coupling constant', 'anomaly', 'perturbation theory', 'field theory, scalar', 'effective Hamiltonian']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409004']
['The running coupling constants are introduced in Quantum Mechanics and their evolution is described by the help of the renormalization group equation. The difference between the renormalization group in real and imaginary time is demonstrated for the case of the harmonic oscillator. It is found for nontrivial systems...
['1994-09-02']
16,655
['eng']
['Lee, B H', 'Min, H']
['Quantum aspects of supersymmetric Maxwell Chern-Simons solitons']
['Condensed Matter']
['gauge field theory, U(1)', 'Chern-Simons term', 'supersymmetry', 'dimension, 3', 'field theory, soliton', 'quantization', 'perturbation theory', 'particle, multiplet', 'multiplet, particle']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409006']
['We study the various quantum aspects of the N=2 supersymmetric Maxwell Chern-Simons vortex systems. The fermion zero modes around the vortices will give rise the degenerate states of vortices. We analyze the angular momentum of these zero modes and apply the result to get the supermultiplet structures of the vortex. ...
['1994-09-02']
16,656
['eng']
['Watson, N J']
['Gauge-invariant variables and Mandelstam constraints in SU(2) gauge theory']
['Particle Physics - Theory']
['talk', 'gauge field theory, SU(2)', 'constraint, solution', 'loop space', 'lattice field theory']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408174']
["The recent solution of the Mandelstam constraints for SU(2) is reviewed. This enables the subspace of physical configurations of an SU(2) pure gauge theory on the lattice (introduced solely to regulate the number of fields) with 3N physical degrees of freedom to be fully described in terms of 3N gauge-invariant conti...
['1994-09-01']
16,657
['eng']
['Sollacher, R']
['Effective field theories from QCD']
['Particle Physics - Theory']
['talk', 'quantum chromodynamics', 'effective Lagrangian', 'gauge field theory, SU(N)', 'gauge fixing', 'eta(958), quantum number', 'bosonization']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409002']
["We present a method for extracting effective Lagrangians from QCD. The resulting effective Lagrangians are based on exact rewrites of cut-off QCD in terms of these new collective field degrees of freedom. These cut-off Lagrangians are thus ``effective'' in the sense that they explicitly contain some of the physical l...
['1994-09-02']
16,658
['eng']
['Jurco, B']
['Differential calculus on quantum groups']
['Particle Physics - Theory']
['talk, Varenna 1994/06/28', 'quantum group, representation', 'algebra, Hopf', 'R-matrix', 'differential forms']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408179']
['A brief review of the construction and classifiaction of the bicovariant differential calculi on quantum groups is given.']
['1994-09-01']
16,659
['eng']
['Avramidi, I G']
['A method for calculating the heat kernel for manifolds with boundary']
['Particle Physics - Theory']
['asymptotic expansion, heat kernel', 'effective action']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9509078']
['The covariant technique for calculating the heat kernel asymptotic expansion for an elliptic differential second order operator is generalized to manifolds with boundary. The first boundary coefficients of the asymptotic expansion which are proportional to t^{1/2} and t^{3/2} are calculated. Our results coincide with...
['1995-09-15']
16,660
['eng']
['Sfetsos, K']
['On gravitational shock waves in curved spacetimes']
['Particle Physics - Theory']
['gravitational radiation, shock waves', 'Einstein equation, solution', 'field theory, matter', 'astrophysics, fundamental constant', 'black hole', 'space-time, de Sitter', 'string model']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408169']
['Some years ago Dray and \'t Hooft found the necessary and sufficient conditions to introduce a gravitational shock wave in a particular class of vacuum solutions to Einstein\'s equations. We extend this work to cover cases where non-vanishing matter fields and cosmological constant are present. The sources of gravita...
['1994-08-31']
16,661
['eng']
['Sutcliffe, P M']
['Instanton moduli and topological soliton dynamics']
['Particle Physics - Theory']
['Skyrme model', 'sine-Gordon model', 'gauge field theory, SU(2) x U(1)', 'field theory, instanton', 'field theory, sphaleron', 'moduli space', 'geometry, algebra', 'numerical calculations']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408168']
['It has been proposed by Atiyah and Manton that the dynamics of Skyrmions may be approximated by motion on a finite dimensional manifold obtained from the moduli space of SU(2) Yang-Mills instantons. Motivated by this work we describe how similar results exist for other soliton and instanton systems. We describe in de...
['1994-08-31']
16,662
['eng']
['Inami, T', 'Konno, H']
['Integrable XYZ spin chain with boundaries']
['Particle Physics - Theory']
['statistical mechanics', 'model, spin', 'spin, model', 'model, vertex', 'boundary condition', 'integrability', 'Yang-Baxter equation, solution']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409138']
['We consider a general class of boundary terms of the open XYZ spin-1/2 chain compatible with integrability. We have obtained the general elliptic solution of K-matrix obeying the boundary Yang-Baxter equation using the R-matrix of the eight vertex model and derived the associated integrable spin-chain Hamiltonian.']
['1994-09-27']
16,663
['eng']
['Park, Q H', 'Shin, H J']
['Deformed minimal models and generalized Toda theory']
['Particle Physics - Theory']
['field theory, conformal', 'model, minimal', 'dimension, 2', 'field theory, deformation', 'field theory, Toda', 'coset space']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408167']
['We introduce a generalization of A_{r}-type Toda theory based on a non-abelian group G, which we call the (A_{r},G)-Toda theory, and its affine extensions in terms of gauged Wess-Zumino-Witten actions with deformation terms. In particular, the affine (A_{1},SU(2))-Toda theory describes the integrable deformation of t...
['1994-08-31']
16,664
['eng']
['Awata, H', 'Fukuma, M', 'Matsuo, Y', 'Odake, S']
['Representation theory of the W$_{1+\\infty}$ algebra']
['Mathematical Physics and Mathematics']
['talk, Kyoto 1994/02/14', 'algebra, W(infinity)', 'supersymmetry, algebra', 'algebra, representation', 'operator, determinant', 'bibliography']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408158']
['We review the recent development in the representation theory of the W_{1+\\infty} algebra. The topics that we concern are, Quasifinite representation, Free field realizations, (Super) Matrix Generalization Structure of subalgebras such as W_\\infty algebra, Determinant formula, Character formula. (Invited talk at ``...
['1994-08-30']
16,665
['eng']
['Chen, B', 'Ding, H G', 'Wu, K']
['Gauge theory on Z$_{2}$ x Z$_{2}$ x Z$_{2}$ discrete group and a spontaneous CP violation toy model']
['Particle Physics - Theory']
['gauge field theory, Z(2) x Z(2) x Z(2)', 'differential forms', 'differential geometry, noncommutative', 'violation, CP', 'symmetry, spontaneously broken']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408159']
['In the spirit of Non-commutative differential calculus on discrete group, we construct a toy model of spontaneous CP violation (SCPV). Our model is different from the well-known Weinberg-Branco model although it involves three Higgs doublets and preserve neutral flavor current conservation (NFC) after using the Z_2 \...
['1994-08-30']
16,666
['eng']
['Haagensen, P E', 'Johnson, K']
['Yang-Mills fields and Riemannian geometry']
['Particle Physics - Theory']
['gauge field theory, SU(2)', 'gauge field theory, SU(N)', 'Hamiltonian formalism', 'Gauss law', 'phase space, Hilbert space', 'symmetry, GL(3)', 'differential geometry']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408164']
["It is possible to define new, gauge invariant variables in the Hilbert space of Yang-Mills theories which manifestly implement Gauss' law on physical states. These variables have furthermore a geometrical meaning, and allow one to uncover further constraints physical states must satisfy. For gauge group SU(2), the un...
['1994-08-30']
16,667
['eng']
['Lee, C', 'Yi, P']
['Topology of a nontopological magnetic monopole']
['General Theoretical Physics']
['gauge field theory, U(1)', 'gauge field theory, SO(3)', 'Higgs model', 'postulated particle, magnetic monopole', 'string, Dirac']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408163']
['Certain nontopological magnetic monopoles, recently found by Lee and Weinberg, are reinterpreted as topological solitons of a non-Abelian gauged Higgs model. Our study makes the nature of the Lee-Weinberg monopoles more transparent, especially with regard to their singularity structure.']
['1994-08-30']
16,668
['eng']
['Antonuccio, F']
['Towards a natural representation of quantum theory; 1, the Dirac equation revisited']
['Particle Physics - Theory']
['Dirac equation', 'group theory, Lorentz', 'group theory, representation', 'spinor', 'unitarity']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408166']
["An alternative (yet equivalent) formulation of the Dirac equation and corresponding 4-spinor is investigated by considering a representation of the Lorentz Group over a simple {\\it non-division} algebra. The (commutative) algebra admits a natural operation of `conjugation' , and `unitarity' can easily be defined. In...
['1994-08-30']
16,669
['eng']
['Intriligator, K', 'Seiberg, N']
['Phases of N=1 supersymmetric gauge theories in four dimensions']
['Particle Physics - Theory']
['gauge field theory, Yang-Mills', 'supersymmetry', 'duality, transformation', 'confinement', 'critical phenomena']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408155']
['We exhibit N=1 supersymmetric field theories in confining, Coulomb and Higgs phases. The superpotential and the gauge kinetic terms are holomorphic and can be determined exactly in the various phases. The Coulomb phase generically has points with massless monopoles. When they condense, the theory undergoes a phase tr...
['1996-06-21']
16,670
['eng']
['Guo, H', 'Li, J', 'Wu, K']
['Standard model with Higgs as gauge field on fourth homotopy group']
['Particle Physics - Theory']
['talk, Bombay 1994/01/05', 'field theory, Higgs', 'gauge field theory', 'group theory, discrete', 'symmetry, Z(2)', 'invariance, CPT', 'unified field theory', 'electroweak interaction', 'strong interaction', 'coupling, Yukawa', 'Yukawa, coupling']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408152']
["Based upon a first principle, the generalized gauge principle, we construct a general model with G_L\\times G'_R \\times Z_2 gauge symmetry, where Z_2=\\pi_4(G_L) is the fourth homotopy group of the gauge group G_L, by means of the non-commutative differential geometry and reformulate the Weinberg-Salam model and the...
['1996-06-21']
16,671
['eng']
['Guo, H', 'Li, J']
['A SU(2) generalized gauge field model with Higgs mechanism']
['Particle Physics - Theory']
['gauge field theory, SU(2)', 'Higgs model', 'unified field theory', 'differential geometry, noncommutative', 'differential forms', 'stability']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408151']
['By means of the non-commutative differential geometry, we construct an SU(2) generalized gauge field model. It is of SU(2) \\times \\pi_4(SU(2)) gauge invariance. We show that this model not only includes the Higgs field automatically on the equal footing with ordinary Yang-Mills gauge potentials but also is stable a...
['1996-06-21']
16,672
['eng']
['Guo, H', 'Li, J', 'Wu, K']
['The $\\sigma$-model and non-commutative geometry']
['Particle Physics - Theory']
['sigma model, nonlinear', 'symmetry, SU(2) x SU(2)', 'gauge field theory, discrete', 'fermion', 'differential geometry, noncommutative']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408150']
['In terms of non-commutative geometry, we show that the \\sigma--model can be built up by the gauge theory on discrete group Z_2. We introduce a constraint in the gauge theory, which lead to the constraint imposed on linear \\sigma model to get nonlinear \\sigma model .']
['1996-06-21']
16,673
['eng']
['Gaillard, Mary Katherin']
['Pauli-Villars regularization of supergravity coupled to chiral and Yang-Mills matter']
['Particle Physics - Theory']
['supergravity', 'model, chiral', 'gauge field theory, Yang-Mills', 'potential, Kaehler', 'perturbation theory, higher-order', 'regularization, Pauli-Villars']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408149']
['It is shown that the one-loop quadratic divergences of standard supergravity can be regulated by the introduction of heavy Pauli-Villars fields belonging to chiral and abelian gauge multiplets. The resulting one-loop correction can be interpreted as a renormalization of the K\\"ahler potential. Regularization of the ...
['1996-06-21']
16,674
['eng']
['Hosotani, Y']
['Spontaneous breakdown of the Lorentz invariance in three-dimensional gauge theories']
['Particle Physics - Theory', 'Particle Physics - Theory']
['talk', 'gauge field theory, U(1)', 'fermion', 'dimension, 3', 'symmetry, Lorentz', 'symmetry, spontaneously broken', 'ground state, variational', 'energy, density', 'mass, topological', 'topological, mass', 'Goldstone theorem', 'Hall effect', 'talk', 'gauge field theory, U(1)', 'fermion', 'dimension, 3', 'symmetry, L...
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408148', 'http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=.&id=SCAN-9412152']
["In a class of renormalizable three-dimensional abelian gauge theory the Lorentz invariance is spontaneously broken by dynamical generation of a magnetic field B. The true ground state resembles that of the quantum Hall effect. An originally topologically massive photon becomes gapless, fulfilling the role of the Namb...
['1994-12-12']
16,675
['eng']
['Dvoeglazov, V V']
['What particles are described by the Weinberg theory?']
['Particle Physics - Theory']
['talk, Zacatecas 1994/08/08', 'field theory, tensor', 'group theory, Lorentz', 'group theory, representation', 'Lagrangian formalism', 'spin, operator', 'operator, spin', 'charge, operator']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408146']
['The main goal of the paper, to study the origins of a contradiction between the Weinberg theorem B-A=\\lambda and the longitudity of an antisymmetric tensor field (and of a Weinberg field which is equivalent to it), transformed on the (1,0)\\oplus (0,1) Lorentz group representation, has been successfully achieved. Th...
['1996-06-21']
16,676
['eng']
['Ghoroku, K']
['Conformally exact black hole perturbed by a marginal operator']
['Particle Physics - Theory']
['black hole', 'dimension, 2', 'field theory, conformal', 'postulated particle, tachyon', 'condensation, tachyon', 'perturbation theory', 'dimension, >2', 'Wess-Zumino-Witten model, SL(2,R)/U(1)']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408144']
['We have examined effective theory induced by gauged WZW models, in which the tachyon field is added as a marginal operator. Due to this operator added, we must further add the higher order corrections, which modifies the original configuration, to make the theory full-conformally invariant. It has been found that 2d ...
['1996-06-25']
16,677
['eng']
['Bornholdt, S', 'Tetradis, N', 'Wetterich, C']
['Coleman-Weinberg phase transition in two-scalar models']
['Particle Physics - Theory']
['field theory, scalar', 'symmetry, discrete', 'field theory, Euclidean', 'effective potential', 'critical phenomena', 'renormalization group, beta function', 'numerical calculations']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408132']
['We explore the Coleman-Weinberg phase transition in regions outside the validity of perturbation theory. For this purpose we study a Euclidean field theory with two scalars and discrete symmetry in four dimensions. The phase diagram is established by a numerical solution of a suitable truncation of exact non-perturba...
['1994-08-25']
16,678
['eng']
['Borthwick, D', 'Klimek, S', 'Lesniewski, A', 'Rinaldi, M']
['Matrix cartan superdomains, super Toeplitz operators, and quantization']
['Particle Physics - Theory']
['quantization', 'nonperturbative', 'supersymmetry, superspace', 'linear spaces, Hilbert space', 'algebra, C*', 'mathematical methods']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9406050']
["We present a general theory of non-perturbative quantization of a class of hermitian symmetric supermanifolds. The quantization scheme is based on the notion of a super Toeplitz operator on a suitable Z_2 -graded Hilbert space of superholomorphic functions. The quantized supermanifold arises as the C^* -algebra gener...
['1996-06-24']
16,679
['eng']
['Jadczyk, A']
['topics in quantum dynamics']
['Particle Physics - Theory']
['lectures', 'Schroedinger equation', 'differential geometry', 'fibre bundle', 'group theory, Galilei', 'quantization', 'wave function', 'linear spaces, Hilbert space']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9406204']
['The paper consists of two parts. In the first part Schroedinger\'s equation for a charged quantum particle in a Galilei-Newton curved space-time is derived in a fully geometrical way. Gravitational and electromagnetic fields are coded into space metric and space-time connection. The fundamental geometrical object is ...
['1994-07-01']
16,680
['eng']
['Borthwick, D', 'Klimek, S', 'Lesniewski, A', 'Rinaldi, M']
['Supersymmetry and Fredholm modules over quantized spaces']
['Particle Physics - Theory']
['quantization', 'nonperturbative', 'supersymmetry, superspace', 'field theory, Kaehler', 'field theory, deformation', 'differential geometry, noncommutative', 'linear spaces, Hilbert space', 'algebra, C*']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9406051']
['The purpose of this paper is to apply the framework of non- commutative differential geometry to quantum deformations of a class of Kahler manifolds. For the examples of the Cartan domains of type I and flat space, we construct Fredholm modules over the quantized manifolds using the supercharges which arise in the qu...
['1996-06-24']
16,681
['eng']
['Carey, A L', 'Murray, M K']
['Mathematical remarks on the cohomology of gauge groups and anomalies']
['Particle Physics - Theory']
['gauge field theory, Yang-Mills', 'fibre bundle', 'cohomology', 'anomaly']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408141']
['Anomalies can be viewed as arising from the cohomology of the Lie algebra of the group of gauge transformations and also from the topological cohomology of the group of connections modulo gauge transformations. We show how these two approaches are unified by the transgression map. We discuss the geometry behind the c...
['1994-08-26']
16,682
['eng']
['Köster, S']
['Two dimensional QCD is a string theory']
['Particle Physics - Theory']
['thesis', 'gauge field theory, U(N)', 'string model', 'dimension, 2', 'lattice field theory', 'action, heat kernel', 'Wilson loop', 'Riemann surfaces', 'Feynman graph, planar', 'expansion 1/N, chiral']
['http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408140']
['This text, written as dissertation within the M.Sc. course in particle theory at the Centre for Particle Theory, University of Durham, during the academic year 1993/94, reviews two articles by D.Gross and by D.Gross and W.Taylor which interpret the 1/N- expansion of the partition function of $QCD_2$ as string perturb...
['2003-07-04']
16,683
['eng']
['Lowe, D A', 'Thorlacius, L']
['Hot string soup']
['Particle Physics - Theory']
['string model, closed', 'energy levels, density', 'statistical mechanics', 'temperature']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408134']
['Above the Hagedorn energy density closed fundamental strings form a long string phase. The dynamics of weakly interacting long strings is described by a simple Boltzmann equation which can be solved explicitly for equilibrium distributions. The average total number of long strings grows logarithmically with total ene...
['1994-08-25']
16,684
['eng']
['Zaslow, E']
['Solitons and helices']
['General Theoretical Physics']
['field theory, topological', 'soliton', 'supersymmetry, superfield', 'cohomology', 'geometry, algebra']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408133']
['We present evidence for an undiscovered link between N=2 supersymmetric quantum field theories and the mathematical theory of helices of coherent sheaves. We give a thorough review for nonspecialists of both the mathematics and physics involved, and invite the reader to take up the search for this elusive connection....
['1994-08-25']
16,685
['eng']
['Hori, K']
['Global aspects of gauged Wess-Zumino-Witten models']
['Particle Physics - Theory']
['field theory, conformal', 'dimension, 2', 'Wess-Zumino-Witten model', 'path integral', 'gauge field theory', 'topology, effect', 'correlation function', 'group theory, geometrical', 'fibre bundle', 'bibliography']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9411134']
['A study of the gauged Wess-Zumino-Witten models is given focusing on the effect of topologically non-trivial configurations of gauge fields. A correlation function is expressed as an integral over a moduli space of holomorphic bundles with quasi-parabolic structure. Two actions of the fundamental group of the gauge g...
['1994-11-22']
16,686
['eng']
['Kovner, A', 'Rosenstein, B']
['Fermionic operators from bosonic fields in 3+1 dimensions']
['Particle Physics - Theory']
['quantum electrodynamics', 'fermion', 'bosonization', 'fermionization', 'loop space', 'anomaly']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408128']
["We present a construction of fermionic operators in 3+1 dimensions in terms of bosonic fields in the framework of QED_4. The basic bosonic variables are the electric fields E_i and their conjugate momenta A_i. Our construction generalizes the analogous constuction of fermionic operators in 2+1 dimensions. Loosely spe...
['1996-06-21']
16,687
['eng']
['Schilling, A', 'van Nieuwenhuizen, P']
['Multiplicative BRST renormalization of the SU(2) Higgs model']
['Particle Physics - Theory']
['Higgs model', 'gauge field theory, SU(2)', 'symmetry, spontaneously broken', 'renormalization, Becchi-Rouet-Stora', 'Ward identity']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408125']
['We reformulate the proof of the renormalization of a spontaneously broken gauge theory by multiplicatively renormalizing the vacuum expectation value of the Higgs field in the SU(2)~Higgs model.']
['1996-06-21']
16,688
['eng']
['Yamanobe, M', 'Ishikawa, S', 'Yoshida, R', 'Iwama, Y']
['Kalb-Ramond interaction for a closed p-brane']
['Particle Physics - Theory']
['membrane model, p-brane', 'membrane model, closed', 'field theory, action', 'string model', 'field theory, tensor']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408122', 'http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=.&id=SCAN-9412085']
['The Kalb-Ramond action for an interacting string is generalized to the case of a high-dimensional object (p-brane). The interaction is found to be mediated by a gauge boson of a completely antisymmetric tensor of rank p+1.']
['1994-12-06']
16,689
['eng']
['Feinberg, J']
['On kinks and bound states in the Gross-Neveu model']
['Particle Physics - Theory']
['Gross-Neveu model', 'dimension, 2', 'fermion, condensation', 'field equations, soliton', 'effective action', 'supersymmetry', 'saddle-point approximation', 'bound state', 'expansion 1/N']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408120']
['We investigate static space dependent \\sigx=\\lag\\bar\\psi\\psi\\rag saddle point configurations in the two dimensional Gross-Neveu model in the large N limit. We solve the saddle point condition for \\sigx explicitly by employing supersymmetric quantum mechanics and using simple properties of the diagonal resolven...
['1996-06-21']
16,690
['eng']
['Kaneko, T']
['A Feynman graph generator for any order of coupling constants']
['Particle Physics - Phenomenology']
['Feynman graph, higher-order', 'gauge field theory, nonabelian', 'coupling constant', 'programming']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408107']
[]
['2003-09-27']
16,691
['eng']
['Kirillov, A N']
['Dilogarithm identities']
['Particle Physics - Theory']
['lectures, Kyoto 1994/02/14', 'field theory, conformal', 'algebra, Kac-Moody', 'analytic properties', 'mathematical methods, dilogarithm', 'bibliography']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408113']
['We study the dilogarithm identities from algebraic, analytic, asymptotic, K-theoretic, combinatorial and representation-theoretic points of view. We prove that a lot of dilogarithm identities (hypothetically all !) can be obtained by using the five-term relation only. Among those the Coxeter, Lewin, Loxton and Browki...
['1994-08-22']
16,692
['eng']
['Marcus, N', 'Yankielowicz, S']
['The topological B model as a twisted spinning particle']
['Particle Physics - Theory']
['sigma model, nonlinear', 'field theory, topological', 'particle, relativistic', 'spin', 'relativity theory, general', 'torsion', 'quantization', 'Hamiltonian formalism', 'field theory, Kaehler', 'anomaly']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408116']
['The B-twisted topological sigma model coupled to topological gravity is supposed to be described by an ordinary field theory: a type of holomorphic Chern-Simons theory for the open string, and the Kodaira-Spencer theory for the closed string. We show that the B model can be represented as a PARTICLE theory, obtained ...
['1994-08-22']
16,693
['eng']
['Chaudhuri, S', 'Chung, S W', 'Hockney, G M', 'Lykken, J D']
['String models for locally supersymmetric grand unification']
['Particle Physics - Theory']
['talk', 'string model', 'supersymmetry', 'grand unified theory, SO(10)', 'grand unified theory, SU(5)', 'particle, multiplet', 'multiplet, particle']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9409151']
['Phenomenologically viable string vacua may require incorporating Kac-Moody algebras at level \\geq 2. We exploit the free fermionic formulation to construct N=(0,2) world-sheet supersymmetric string models with specific phenomenological input: N=1 spacetime supersymmetry, three generations of chiral fermions in gauge...
['1994-09-27']
16,694
['eng']
['Haagensen, P E', 'Kubyshin, Yu A', 'Latorre, J I', 'Moreno, E F']
['The exact renormalization group and approximations']
['Particle Physics - Theory']
['talk', 'renormalization group, beta function', 'renormalization group, c-function', 'differential equations, solution', 'critical phenomena', 'numerical calculations']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408050']
['We review the Exact Renormalization Group equations of Wegner and Houghton in an approximation which permits both numerical and analytical studies of nonperturbative renormalization flows. We obtain critical exponents numerically and with the local polynomial approximation (LPA), and discuss the advantages and shortc...
['1994-08-10']
16,695
['eng']
['Zippold, W']
['Hilbert space representation of an algebra of observables for q-deformed relativistic quantum mechanics']
['Particle Physics - Theory']
['quantum mechanics, deformation', 'quantum algebra, representation', 'linear spaces, Hilbert space', 'quantum group, SL(2,C)', 'angular momentum']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408111']
['Using a representation of the q-deformed Lorentz algebra as differential operators on quantum Minkowski space, we define an algebra of observables for a q-deformed relativistic quantum mechanics with spin zero. We construct a Hilbert space representation of this algebra in which the square of the mass p^2 is diagonal...
['1994-08-22']
16,696
['eng']
['Landsman, N P']
['Observation and superselection in quantum mechanics']
['Particle Physics - Theory']
['quantum mechanics, measurement', 'superselection rule', 'operator, algebra', 'linear spaces, Hilbert space', 'bibliography']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9411173', 'http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=.&id=SCAN-9409069']
["We attempt to clarify the main conceptual issues in approaches to `objectification' or `measurement' in quantum mechanics which are based on superselection rules. Such approaches venture to derive the emergence of classical `reality' relative to a class of observers; those believing that the classical world exists in...
['1994-11-24']
16,697
['eng']
['Ashtekar, Abhay', 'Lewandowski, J R', 'Marolf, D M', 'Mourao, J', 'Thiemann, T']
['A manifestly gauge-invariant approach to quantum theories of gauge fields']
['Particle Physics - Theory']
['talk', 'field theory, scalar', 'gauge field theory, Yang-Mills', 'dimension, 2', 'transformation, gauge', 'quantization', 'path integral, measure']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408108']
['In gauge theories, physical histories are represented by space-time connections modulo gauge transformations. The space of histories is thus intrinsically non-linear. The standard framework of constructive quantum field theory has to be extended to face these {\\it kinematical} non-linearities squarely. We first pres...
['1994-08-22']
16,698
['eng']
['Modanese, G']
['Potential energy in quantum gravity']
['General Relativity and Cosmology']
['quantum gravity', 'vacuum state', 'space-time, dependence', 'potential, static', 'energy']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408103']
['We give a general expression for the static potential energy of the gravitational interaction of two massive particles, in terms of an invariant vacuum expectation value of the quantized gravitational field. This formula holds for functional integral formulations of euclidean quantum gravity, regularized to avoid con...
['1994-08-22']
16,699
['eng']
['Frenkel, E']
['Free field realizations in representation theory and conformal field theory']
['Particle Physics - Theory']
['talk, Zuerich 1994/08/03', 'field theory, conformal', 'dimension, 2', 'operator, vertex', 'operator, algebra', 'algebra, Heisenberg', 'algebra, Kac-Moody', 'algebra, W(N)', 'algebra, representation', 'bibliography']
['http://preprints.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-th&id=9408109']
['Invited lecture at the International Congress of Mathematicians, Zuerich, August 3-11, 1994 (extended version), reviews free field realizations of affine Kac-Moody and W-algebras and their applications.']
['1994-08-22']